body {
	background: pink;
}
div {
	font-size:40px;
	border:1px solid red;
	height:200px;
}
ul {
	li {
		border:1px solid blue;
		span {
			font-size:30px;
			border:2px solid black;
		}
		var {
			display:block;
			width:100px;
			border:1px solid blue;
			height:100px;
			background: url(i/btn.png) no-repeat 0 0;
		}
	}
}
.test {
	width:54px;
	height:54px;
	background:url(i/icon_douban.png) no-repeat 0 0;
}
.tst1 {
	li {
		width:54px;
		height:54px;
	}
	.li1 {
		background: url(i/icon_douban.png) no-repeat 0 0;
	}
	.li2 {
		background: url(i/icon_qq.png) no-repeat 0 0;
	}
	.li3 {
		background: url(i/icon_renren.png) no-repeat 0 0;
	}
	.li4 {
		background: url(i/icon_weibo.png) no-repeat 0 0;
	}
}